Shock-absorber



M. G. REED.

SHOCK ABSORBER..

APPLICATION mm mus n. 1919.

1,356,471. Patented Oct. 19, 1920.

4 INVENTUW 8y Hank/la ATTORNEYS UNITED STATES PATENT OFFICE.

MARLIN GBAVI EB REED, F BIBDOKVILLE, PENNSYLVANIA.

SHOCK-ABSORBER.

'1 o on whom it may concern:

Be it known that I MARLIN. G. Race, at citizenof the United tates, and a resident of Brookville, in the county of Jefferson and State of Pennsylvania, have invented a new and Improved Shock-Absorber, of which the following is a full, clear, and ex act description.

This invention relates to shock absorbers, and has for an object the provision of an improved construction wherein means are provided which will not prevent a free up or down initial movement of the wheel or axle. but will 'ieldlngly resist a return movement.

Another object of the in ention is to p1 vidc a shock absorber in which friction members are provided for resisting some what movement in either direction of an axle and providing a greatly increased resistance to the return of an axle from either an up or down position.

A. still furtherobject of the invention is to provide a shoclrabsorber having a pair of spring pressed pivotall mounted members arranged to produce riction when the axle moves up or down independent of the body of the vehicle to which the device is connected and to increase this resistance when the movement is a. preciable.

In the accompanying rawing:

Figure 1 is a vertical. sectional view through part of an automobile showin the arrangement of shock absorbers there or.

Fig. 2 is'a fra mentary sectional view through Fig. 1 on line 22.

Fig. 3 is a section through Fig. 1 on line 3-3.

Fig. 4 is an enlarged top plan view of'the spring structure forming certain features of the invention.

' Referrin to the accompanying drawing by numera s, 1 indicates an axle of an au-' tomobile to which is connected the wh'eels 2 and 3. This axle carries springs {and 5 of any desired kind, as for instance the ordinary leaf spring structure, which are held in place by suitable u-bolt's ii-and 7. As one set of springs and parts associated therewith are identical with the other the description of one will equally apply to both. As shown in Fig. 1 the friction plate 8 is f ormed with upstanding walls 9 and 10. said plate being held in lace by the U-bolt 6 as shown inFig. 3; "l hese friction I Specification of Letters Patent Patented Oct. 19, 1920.

Application filed Tune 11, 1919. Serial No. 308,27i5.

rods 19 and 20. which male extend through suitable guiding vY'ElPH'fZ i' iF h -S 21. and 22 prcicillhly formed ii; i E with the platc 2-3 which is bolted r A. wise li iiil; cured to the beam l'ormiug; part 0 the car body. The rule If. and iii) are threaded 'ior {hr full it go: in, providing an adjustment of bars 15 and 16. 1 257 and 28 acting as jam or lo i-t nuts. The bars 15 and 16 pro ect an appreciable distance below the plate 8 and at the. lower end carry a spring structure 29, which is formed as shown more purtic-ulirl c in Fig. 4. This arran termini of sp slice-lure is old. but is user at the lower i of the bars 15 and 16 so to draw thesebars together as shown in dotted lines at the right in Fig. 1. \Vhencver the plate ne ves upward a predetermined distance, or downward a predetermined distance. as shown at the right in Fig. 1, the axles and associated parts are moved upwardly until the cam 13 is moved under the cam surface 12. This will prevent any shounu while allowing a slow return to IHr'llfl i:--+--' with the cam 13 substantially cont. wall 9.

In operation the part are normally in the position shown in Fig. 1 with the cams 1-3 and 14 positioned centrally of the walls 9 and 10. If the axle 1 should move up wardly as shown in dotted lines in Fig. 1 the axle would b just described. In case the axle :hwld drop down the walls 9 and 10 would then move beneath the cams 13 and 14'. The .uru of the cams to their correct gosh-ion resisted b the spring structure *21", the action ofw ich may be varied by adjusting the various nuts on the draw bar of the structure or the U-meniber.

What I claim is:

1. A shock absorber for automobiles com prising a plate formed with a. air of upstanding walls adapted to stradille one of the springs of an automobile, said. late having openings through which the U Its for clamping said spr ng in position pass a spring and alSO clamp the plate in osition a pair of bars arranged substantial y parallel with said upstanding walls, each of said bars having a rounded cam normally engaging when said cams are moved above or belowl said walls b reason of the action of said spring and t e action of said came.

2. shock absorber for automobiles comprising a 'pair of spaced friction members round at the top an bottom; a pair of cams acting on the riction members adapted to slide over portions of said friction members including the tops and bottoms thereof, and construction for causing the came to continually press against the friction members whereby there will be a continuous resistance to the movement of the cams as they move over the friction member and an increased resistance to movement of the cams from a position above or below the friction members.

3 A shock absorber for automobiles comprising a plate formed with a pair of upstanding walls, a pair of bars arranged sub stantially parallel to said upstanding walls, each of said bars having a rounded cam normally engaging an outer surface of said upstanding walls, means for pivotally connecting the upper ends of said bars to the body of an automobile, and a spring connected with the lower ends of said bars for pulling the same toward each other whereby there will bev appreciable friction against said upstanding walls and an appreciable retarding effect when said cams are moved from positions above or below said walls by reason of the action of said springs and the action of said cams.

MARLIN GRAVES REED. 

